Corrosion-resistant alloy, preparation process and article made from the alloy
US6254660A · kind A · utility
9Cited by
7References
65Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1998 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Nov 25, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C32/0031
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a Cr.sub.2 O.sub.3 -forming alloy that is resistant to oxidization and/or corrosion at high temperature, especially by glass, characterized in that it contains, in dispersion within its matrix, chromium oxide Cr.sub.2 O.sub.3, or a precursor of this oxide. This alloy can be prepared by powder metallurgy using a process of hot consolidation of metallic powders, in particular by sintering. The alloy is especially suitable for articles which are to be used in a high-temperature oxidizing or corrosive environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.